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Note 14 - Fair Value Measurements (Tables)
 6 Months Ended
Feb. 29, 2016
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]
       
Fair Value Measurements
Using Inputs Considered as
   
Fair Value as of
February 29, 2016
   Level 1   Level 2   Level 3
Available for sale securities   $ 2,733,079     $ 2,733,079     $ —     $ —  
       
Fair Value Measurements
Using Inputs Considered as
   
Fair Value as of
August 31, 2015
   Level 1   Level 2   Level 3
Available for sale securities   $ 2,027,441     $ 2,027,441     $ —     $ —